China’s hypersonic vehicle test a ‘significant demonstration’ of space technology
The Pentagon’s hyperfocus on hypersonic missile threat
Hyten: To counter hypersonic missiles DoD needs ‘overhead sensors that see everything’ 
SpaceX wins Air Force manufacturing research contract for hypersonic vehicle thermal shields
Space Development Agency to deploy hypersonic missile defense satellites by 2022
Op-ed | DoD needs to demystify hypersonic weapons technology
Missile Defense Agency selects four companies to develop space sensors
Hyten: Hypersonic missile defense satellites a job for the Space Development Agency